//
//  UIBarButtonItem+extension.swift
//  YR 微博
//
//  Created by cyr on 15/10/20.
//  Copyright © 2015年 cyr. All rights reserved.
//

import UIKit

extension UIBarButtonItem {
    
    convenience init(imageName: String, target: AnyObject?, action: String?) {
        let button = UIButton()
        button.setImage(UIImage(named: imageName), forState: UIControlState.Normal)
        button.setImage(UIImage(named: imageName + "_highlighted"), forState:UIControlState.Highlighted)
        button.sizeToFit()
   
        // 设置监听方法
        if let actionName = action {
            button.addTarget(target, action: Selector(actionName), forControlEvents: UIControlEvents.TouchUpInside)
    }
        self.init(customView: button)
    }
    
}
